We track four people on their journey.
Caught in the crossfire of the US war on gangs
07 May 2010 19:00 GMT | Africa
Aids kills some 6,000 people each day in Africa - more than wars, famines and floods. Millions of children are orphans, many more live with HIV or Aids.
In Zimbabwe, almost 1.2 million children have been orphaned by HIV/Aids.Many grandmothers, who assume responsibility for orphans, are living in absolute poverty, and struggling daily to provide for the numerous children under their care.After having endured the trauma and distress of watching their children and grandchildren struggle with the deadly disease, the stress and isolation is compounded by the lack of resources available to them.
Al Jazeera's Imran Khan reports on the country's elderly population who have to be brave when faced with adversity.
Source: Al Jazeera
Watch a selection of previous Witness documentaries from Africa.
Arts & Culture
West Bengal long suffered cancerous effects of arsenic-laced water, but projects to provide clean water show promise.
Health, Poverty & Development, Environment
Muslim fashion designers reflect on a rapidly growing industry.
Arts & Culture, Islam, Business & Economy
Americans' passports could be seized if they owe more than $50,000 in taxes, but could this law be unfairly applied?
Business & Economy, United States, Politics
How peat swamp destruction in Malaysia is causing devastating health problems and irreversible environmental damage.
Environment, Climate Change, Climate SOS
Turkish border remains shut as thousands continue to flee government offensive on rebel-held areas of Aleppo City.
War & Conflict, Middle East, Turkey, Bashar al-Assad, Syria
At least seven people confirmed dead after 17-storey building in the city of Tainan collapses, trapping scores.
Environment, Asia Pacific, Taiwan, Earthquake
A couple working to protect LA communities from gang violence is caught in the crossfire of the US war on gangs.
Politics, Gang violence, US
How improving relations between communist Cuba and the capitalist US will change the lives of people on both sides.
Politics, United States, Cuba
Mayotte is a magnet for Comoros islanders who risk their lives crossing hazardous seas in search of a better life.
Poverty & Development, France, Refugees
A three-part series looking at the history of France's black community and their long struggle for recognition.
Politics, US & Canada, France